What would cause a powermaxx to leak between hot and cold side? - Ford Powerstroke Diesel Forum
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Old 07-01-2014, 08:14 AM
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What would cause a powermaxx to leak between hot and cold side?



It is definitely leaking between the hot and cold side, the up pipe and down pipes arent leaking since I reseated them and now it is definitely coming from the middle of the turbo.

Any advice? My turbo is taking longer to spool and my fuel mileage is worse.

I tightened the v band and it is tight, I cant see if the v band is properly seated or not until i get the turbo back off.
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Old 07-01-2014, 09:08 AM
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either the turbo is screwed or you have a bad bellows on the pipes
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Old 07-01-2014, 11:25 AM
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You may have a leak on the turbine side. That's crazy I've never seen that before. Load it in gear and see where the soot is coming from
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Old 07-01-2014, 01:25 PM
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I think the V band is still not seated right, there a pain
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Old 07-01-2014, 07:18 PM
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I am hoping it is a v band thanks guys

And odawg I have been wanting to do that but I have been trying to decide who I trust to load it while I am standing on the tire haha.
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Old 07-02-2014, 05:37 PM
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It leaks between the center housing and the turbine housing, probably right where that small gap is between the 2 ends of the v-band clamp.

First grab your 7/16" deep and check the clamp to make sure it's tight. It may have settled in a little more after a few heat cycles. Brand new turbos have a greater tendency to leak as I found out after I installed my new center housing and media blasted turbine housing and they sandwiched together TOO easy, basically too much of a gap until they sooted up a little and eventually it sealed itself. My leak wasn't as bad as yours but I've seen that on other turbos with loose clamps. There's no where else it could leak exhaust like that
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Old 07-04-2014, 05:41 AM
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Ok thanks sinner, I will pop the turbo back off and try and get the v band settled the right way, I already tightened it as much as it will go but now that you mention it I do see the gap n the v band.

I will let everyone know what happens, right now I am fighting with a ICP issue and wiring issues that are causing a #5 cylinder imbalance code.
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